1680163836 has 48 divisors (see below), whose sum is σ = 4367546400. Its totient is φ = 499145472.

The previous prime is 1680163831. The next prime is 1680163843. The reversal of 1680163836 is 6383610861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680163831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181171 + ... + 190218.

It is an arithmetic number, because the mean of its divisors is an integer number (90990550).

Almost surely, 2^1680163836 is an apocalyptic number.

It is an amenable number.

1680163836 is an abundant number, since it is smaller than the sum of its proper divisors (2687382564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1680163836 is a wasteful number, since it uses less digits than its factorization.

1680163836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371438 (or 371436 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 1680163836 is about 40989.8016096687. The cubic root of 1680163836 is about 1188.8230332805.

The spelling of 1680163836 in words is "one billion, six hundred eighty million, one hundred sixty-three thousand, eight hundred thirty-six".